#!/usr/bin/env python3
# Copyright (C) 2011 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

"""Displays the sum of a counter found in a subunit stream.

Each test have (or not) the counter as a named detail in the stream.
"""

import sys
import unittest

import subunit
import testtools


class TestSumCounter(testtools.TestResult):

    def __init__(self, counter_names):
        """Create a FilterResult object outputting to stream."""
        testtools.TestResult.__init__(self)
        self.counter_names = counter_names
        self.totals = {}
        self.longest = 0
        for name in counter_names:
            l = len(name)
            if l > self.longest: self.longest = l
            self.totals[name] = 0

    def addSuccess(self, test, details):
        for name in self.counter_names:
            try:
                counter_text = ''.join(details[name].iter_text())
            except KeyError, e:
                # this counter doesn't exist for the test
                continue
            self.totals[name] += int(counter_text)

    def display_totals(self, stream):
        for name in self.counter_names:
            stream.write('%-*s: %s\n'
                         % (self.longest, name, self.totals[name]))


counter_names = sys.argv[1:]
result = TestSumCounter(counter_names)
test = subunit.ProtocolTestCase(sys.stdin)
test.run(result)
result.display_totals(sys.stdout)
